Pencil



@mm/8mm 2@ w22.

age/95. DE WWT'AN'D. n. J. JLA FRAME.

v- PPIJCTONv FILED GCT 2) 35H9-- "W'all P. DE WITT; F Sl/EEVILBE, AND DAVED 5'. iA FRANCE., 0F MBRIDGE, T/ASSACEUSETTS, ASSIGNORS, BY MESNE ASSIGNMENTS, TO DE WITT-M FRANCE C0., OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION 0F MASSACHSETTS.

PENCIL.

lessees.

Specication of Letters atent. Pgidtntfgg July 259 1922;

Application led October 2, 1915. Serial No, 327,839.

To allwimm t may concern: Be it known that We, WILLIAM P. D l/Vrr'r and DAvm J. LA FRANCE, citizens ot' the United States, residing, respectively, at Somerville and Cambridge, in the county of Middlesex and State ot' Massachusetts, have invented new and useful improvements in Pencils, of which the following is :i specification.

This invention relates to pencils of the class employing; removable leads and having means Jfor adjusting said leads longitudinally of the pencil to take up the wear and also to permit said leads to be positioned entirely Within the casing of the pencil.

The invention has for its object to provide a neat, sim ple and durable device which an act as a separator to hold the extra leads in a easing; provided therefor within the pencil casing.

The invention consists inthe combination and arrangement of parts set .forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawin'fgs:

Figure 1 is a sectional elevation oit our improved pencil.

Fig. 2 is a detail section taken on line 2-2 oi" Fig. 1.

Like numerals refer to like arts throughout the several views of the di'awings.

ln the dre-wings. 5 is an outer tuliular c asing", 6 is a tube slotted at 7 and constituting a holder for a leed 8. 'llhe .tube G has fastened thereto a collar 9 which is also fastened to the inner wall ot' the casing 5: The forward end 1 0 ot the casing 5 is conical .in

form and the forward end of the holder 6` shuts against the inner wall'ot' seid conical portion adjacent its point, so that theholder 6 is held firmly in position concentric with l the casing,- 5 by the collar 9 and by the conical end portion 10 of the casing 5. The forward end of the holder 6 is made' of slightly smaller interior diameter than the diameter of the lead which is used, so that it grips said lead and holds it firmly in position within the tube 6.

A push-rod 1l is mounted to slide within the holder 6 and to thus push the lead'8 longitudinally within said holder and seid push-rod has a lateral projection 12 thereon which projects into the slot 7 in the holder 6 and thus said rod is prevented fromrotating. A screw-threadedmemher 13 is fastened to the rear end ofthe rod 11 and has screw-threaded engagement with an interiorly screw-threaded sleeve 14 which is closed at its rear end at 15 and is rotatably mounted et its forward end et 16 upon the holder 6.

A tubular magazine 17 is rotatable Within the rear end of the casing 5 sind is provided with an annular groove 18, and into this annular groove a flange 19 at the resi' end of the casing 5 projects, so that the magazine 1 7 may be rotated within the casing 5 without moving; longitudinally thereof. The

magazine tube is reduced in diameter at 20 to provide an annular space 21 into which i ears 22 upon a clip 23 muy project. Said magazine tube is again reduced 0,1524 toffit the outside of the screw-threaded sleeve 14 and said reduced portion 24 is soldered to said screw-threaded sleeve 1li and roteteloly mounted in a coller 29 which is soldered to the casing 5. t conical portion 30 connects 330 flange 31 forms a shoulder at the front side of said collert which shoulders prevent the magazine tube from' moving longitudinally.

although it is rotatably mounted Within the collar 29.

From this construction it will be seen that the holder 6, the sleeve 14 and the magazine tube 17 are firmly supported et intervals throughout the length of the casing, the

magazine tube being'supported in the rear end of the casing; and in the collar 29 aud the sleeve 14 being supported by the forward end of the magazine 17 and by the rear end of the holder (i, whilethe holder G is firmly supported in the collar 9 and at its front end within the conical portion l0 of the casing.

A hollow head 25 forms a tight tit upon the extreme rearward end of the magazine 17 and has a bead 26 thereon which projects over and contacts with the rear end of the casing 5, forming a neat finish.

A cup 2T is inserted in the rear end of the magazine 1T and forms a tight fit therein and within this cup is located an eraser 2S which projects from said cup into the .interior of the head Q5.

The clip Q3 is formed as shown in Fig. l, with a space between the forward end and the casing 5, with its rearward end portion soldered to the outside of said casing. rl`wo 22 are preferably upon said clip and extend through corresponding` holes in the casing and are riveted or clinched within said easing, thus lirmljY holding the clip in position upon the casing whereby the pencil may be safety secured lin the pocket of the vest or other article of clothing in which said pencil may be placed,

The general operation is as follows: :it supply of extra leads is placed within the magazine 1T and the eraser 2H is pushed into the cup and said cup 2T inserted in the rear end of the magazine. thus holding the .leads safely enclosed within said magazine. The screw-threaded sleeve. let being closed at its inner end at l5 prevents any of the extra leads from accidentally entering said sleeve.

Assuming the push-rod 11 to be retracted a lead is placed within the holder 6 and pushed thereinto until its forward end is enclosed within the forward end ofthe conial portion l() of the casing. The head 2l which is attached to the rear end of thc magazine l'fby means of a frictional tit 4.hercon is now rotated, thus rotating the magazine, and the magazine being fastened at its forward end to the screw-thrcad al sleeve ist rotates said screw-threaded sleeve. The magazine cannot move longitudinally thereof by reason of the fact that the. flange l!) on the casing 5 projects into the annular groove i8 in said `magaL/,iue and also because the conical portion Si) and the tango 2li located upon opposite sides of the collar 2S) prevent longitudinal motion and, therefore, when the magazine is rotated by means of the head 25 the sleeve 14- will be rotated but cannot move longitudinally thereof within the casing. This results in the' screw-threaded member ll being advanced or retracted according to the direction in which the head is rotated, whereby the push-rod ll may Ibe moved forward to force, the lead 8 out (if the pencil casing. The push-rod l1 is prevented from rotating during this operation by the lateral projection 12 thereon which slides in the slot, 7 provided in the holder 6.

When the lead has been all used the head 2:3 is rotated in the opposite direction to that hereinbefore described, thus causing the screw-threaded member 13 on the push-rod 11 to be retracted within the casing and within the sleeve 1.4, whereupon a new lead can be inserted and the operation repeated to advance the lead it is needed for use.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

l. pencil having, in combination, an outer tubular easing, a tube constituting a holder in the forward end of said casing fast thereto and adapted to hold a lead, a push-rod slidable within said holder, means to prevent said rod from rotating, a screwthreaded member on said rod, an interiorly screw-threiuled sleeve engaging said screwt-hreaded member and rotatably mounted at its` forward end upon the outside of said holder, a head rotatably mounted on the outside of the rear end of said casing and a lube fast at its forward end to said screwthreaded sleeve and at its rearnf'ard end detachably fastened to said head, said tube having an annular groove provided in its periphery adjacent its rear end into which the rear end of said casing projects and said tube being rotatably n'iounted upon and within the rear end of said casing.

2. A. pencil having, in combination, an outer tubular casing, holder in the forward end of said casing fast thereto and adapted to hohl a lead, a pushi rod slidable within said liolder,`ineans to prevent said rod from rotating, a screwthrearled member on said screw-threaded sleeve engaging said screwthreaded member. rotatably mounted at its forward end upon the outside of said holder and closed at its rear end, a bead rotatably mounted on the outside of the rear end of 110 said casing and a tube fast at its forward end to said screw-threaded sleeve and at its rearward end detachably fastened to said head, said tube having an annular groove provided in its periphery end into which the rear end of said casing projects, the front end of said head enclos ing and concealing said casing rear end.

Il. pencil having, in combination, an

outer tubular casing. a tube constituting a 120 holder in the forward end of said casing, fast thereto and adapted to hold a lead. a pusb-rod slidable within said liol(ler,nie:1ns to prevent said rod from rotating, a screwtl'ireaded member on said rod, an interiorly 125 screw-threaded sleeve engaging said screwthreaded member-'and rotatably,mounted at its forward end upon said holder, a head rotatably mounted on Athe outside of the rear end of said casing, a tube fast at its forward 134) a tube constituting a 100 rod. an interiorly adjacent its rear aaaaeoa 'head and a ycollar fast to said casing in which said tube isrotatably mounted.

4. A pencil having, in combination, an outer tubular casing, holder in the forward end of said casing fast thereto and adapted to hold a lead, a

' push-rod slidable within said holder, means to prevent said rod from rotating, a screwthreaded member on said rod, an interiorly screwthreaded sleeve engaging said screwthreaded member and rotatably mounted at its forward end upon 'said holder, a head rotatably mounted on the. rear end of said casing, a tube fast at its forward end to said screw-threaded sleeve vand at its rearward end detachably fastened to said head', and a collar fast to said casing in which said tube is rotatably mounted, said tube being provided with shoulders on opposite sides fr a tube constituting aA of saidlk collar, whereby longitudinal movement of said tube is prevented.

5. Iii a magazine pencil the combination of a tdbular magazine having a circumferential groove; a tubular casing surrounding the magazine and having a rim engaging the circumferential groove of the magazine to permit rotation of the parts relatively to each other; a cap for the magazine covering the juncture .of the magazine with the easing and effective to rotate the magazine; a lead guide co-axial with the casing and the magazine; an ejector in line with the lead guide; and means for translating rotarylmovement of the magazine into longitudinal movement of the ejector.

In testimony whereof we have hereunto set our hands.

.-wLLlai/ P. DE wirr. DAVID J. LA FRANCE. 

